void cpu_tick_set_limit(CPUTimer *timer, uint64_t limit)
{
int64_t now = qemu_get_clock_ns(vm_clock);
uint64_t real_limit = limit & ~timer->disabled_mask;
timer->disabled = (limit & timer->disabled_mask) ? 1 : 0;
int64_t expires = cpu_to_timer_ticks(real_limit, timer->frequency) +
timer->clock_offset;
if (expires < now) {
expires = now + 1;
}
TIMER_DPRINTF("%s set_limit limit=0x%016lx (%s) p=%p "
"called with limit=0x%016lx at 0x%016lx (delta=0x%016lx)\n",
timer->name, real_limit,
timer->disabled?"disabled":"enabled",
timer, limit,
timer_to_cpu_ticks(now - timer->clock_offset,
timer->frequency),
timer_to_cpu_ticks(expires - now, timer->frequency));
if (!real_limit) {
TIMER_DPRINTF("%s set_limit limit=ZERO - not starting timer\n",
timer->name);
qemu_del_timer(timer->qtimer);
} else if (timer->disabled) {
qemu_del_timer(timer->qtimer);
} else {
qemu_mod_timer(timer->qtimer, expires);
}
}
uint64_t cpu_tick_get_count(CPUTimer *timer)
{
uint64_t real_count = timer_to_cpu_ticks(
qemu_get_clock_ns(vm_clock) - timer->clock_offset,
timer->frequency);
TIMER_DPRINTF("%s get_count count=0x%016lx (%s) p=%p\n",
timer->name, real_count,
timer->disabled?"disabled":"enabled", timer);
if (timer->disabled)
real_count |= timer->disabled_mask;
return real_count;
}
void cpu_tick_set_count(CPUTimer *timer, uint64_t count)
{
uint64_t real_count = count & ~timer->disabled_mask;
uint64_t disabled_bit = count & timer->disabled_mask;
int64_t vm_clock_offset = qemu_get_clock_ns(vm_clock) -
cpu_to_timer_ticks(real_count, timer->frequency);
TIMER_DPRINTF("%s set_count count=0x%016lx (%s) p=%p\n",
timer->name, real_count,
timer->disabled?"disabled":"enabled", timer);
timer->disabled = disabled_bit ? 1 : 0;
timer->clock_offset = vm_clock_offset;
}
void cpu_tick_set_count(CPUTimer *timer, uint64_t count)
{
uint64_t real_count = count & ~timer->npt_mask;
uint64_t npt_bit = count & timer->npt_mask;
int64_t vm_clock_offset = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) -
cpu_to_timer_ticks(real_count, timer->frequency);
TIMER_DPRINTF("%s set_count count=0x%016lx (npt %s) p=%p\n",
timer->name, real_count,
timer->npt ? "disabled" : "enabled", timer);
timer->npt = npt_bit ? 1 : 0;
timer->clock_offset = vm_clock_offset;
}
uint64_t cpu_tick_get_count(CPUTimer *timer)
{
uint64_t real_count = timer_to_cpu_ticks(
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - timer->clock_offset,
timer->frequency);
TIMER_DPRINTF("%s get_count count=0x%016lx (npt %s) p=%p\n",
timer->name, real_count,
timer->npt ? "disabled" : "enabled", timer);
if (timer->npt) {
real_count |= timer->npt_mask;
}
return real_count;
}